18 



PB ACTIO AL GUIDE TO GABDEN PLANTS 



same level, as in fig. 113. Partial umbels 

 are umbels seated upon the branches of 

 an umbel, the whole forming a compound 

 umbel. 



Umbrosus, growing in shady places. 



Unarmed, where stems and leaves are 

 destitute of spines or prickles. 



Undulate, having a wavy margin. 



FIU. 113.— UMBI'X. 



FIG. lU.— UBCnOLA'lE. 



Unilateral, turned to one side. 



Urceolate, like a pitcher contracted at the 



mouth, like the flowers of many Heaths, 



as shown in fig. 114. 

 Urens, stinging, as the hairs of the common 



Stinging Nettle. 



Valvate (aestivation), sepals or petals meet- 

 ing at the margins, but 



not overlapping each 



other, as shown in fig. 



115. 

 Veins, the nerves in leaves 



and their ramifications, 



as shown in figs. 34 &o. 

 Velutinous, velvety, as the 



surface of leaves. 

 Ventral, the anterior part ma. lis.— valvate. 



of an organ. 

 Ventricose, swelling unequally on one side. 



somewhat like the corolla of Valerian 

 shown in fig. 60. 



Vernalis, produced in spring. 



Vernation, the arrangement of the leaves 

 when in bud. 



Verrucose, warty. 



Versatile, affixed in the middle, applied to 

 anthers like those of Lilies which swing 

 backwards and forwards with the move- 

 ment of the air. In fig. 9 a versatile 

 anther is shown in the middle. 



Verticillate, arranged in whorls. 



Villous, shaggy with loose long soft hair. 



Virens, green. 



Vir^atus, twiggy. 



Viridis, clear full green. 



Viscous, clammy. 



Volubilis, twisting. 



Wedge-shaped, like a wedge, but attached 



by its point. 

 Whorl, whorled, similar organs arranged in 



a circle round an axis, as the 



leaves of Galium, Asperula 



(fig. 116), and of some Lilies. 

 Winged, having leaf-like or 



membranous expansions, like 



the stems of many Thistles. 

 Wings, the lateral petals of 



a Pea-flower, as shown at w 



in fig. .') ; the flat mem- 

 branous appendages of some j,jq ii6._ 



WHORL. 



Zygomorphic, said of a flower which can 

 only be bisected in one plane so as to 

 show two similar halves. Most Orchid 

 flowers bisected vertically are zygomorphic, 

 as are also many flowers of the Labiate 

 family (p. 742), the Aconite (p. 162) &c. 



